US1880370A - Feed hopper for incinerator flues - Google Patents

Description

Oct. 4, 1932. E. BREITWIESER FEED HOPPER FOR [NCINERATOR FLUES Filed Nov. 22, 1950 til Patented Oct. 4, 1932 nnwann BREITW-IESEE, or ntrrrar ivnw YORK, Assrenon TO BUFFALO o e-corms- ATIVE srovn 00., or BUFFALO, NEW Yemen ocnronn'rron on NEW YORK Jinan HOPPER iron rivernnnnron FLUES hpplieation filed N ovemberi 22, 1930. Serial No. 497,461.

This invention relates to a feed hopper for use in controlling the feed opening in flues or chimneys leading to an incinerator and thereby enable this opening to be uncovered when it is desired to deliver refuse or garbage to the incinerator and to close the same at other times so as to prevent the escape of smoke, vapors or odor into the room.

In hoppers .of this character as heretofore constructed the feed doors of the hopper were either constructed of cast iron which is unduly heavy or the same have been made of aluminum in order to secure lightness, but this is objectionable on account of the rapid wear of the bearing in which the locking or fastening device is pivoted for fastening or releasing the feed door.

- In feed hoppers ofthis character as heretofore constructed the upper partof the open ing was also either wholly uncovered upon opening the feed door and thereby permitted an undue amount of smoke and odor to escape from the chimney or flue into the room, or the baflle or curtain which was provided in this location for preventing the escape of smoke or odor into the room was usually made permanent and thereby interfered with the free and easy introduction of the refuse or garbage through the feed hopper into the line or chimney which directed the same to the incinerator. i

One of the objects of this'invention is to provide a feed hopper for the flues or chimneys of incinerators whieh'permits of making the body of the feed door of very light material such as aluminum, and making the bearing on which the fastener for the door is journaled of a harder or more durable ma terial, and thereby secure the advantage of lightness and greater durability as well as avoiding the objections heretofore encountered.

Another object of this invention is to provide a baflle or damper in the upper part of the feed opening which in its normal position will form an obstruct-ionto prevent the escape of smoke, gases and odors from the flue into the room but which will'easily yield and give way under pressure of refuse or garbage whichis being. delivered by the feed "hopper into the flue and thus facilitate the feeding of this material to the incinerator, said baffle being also so designed that the same will be engaged by the chute of the hopper when the latter is in its open position and thereby not only serve to stop or limit the opening movement of the hopper door and the chute but also close the lower part of the feed opening when the hopper door is openand thereby shut off the escape of smoke, gases and odors from the flue into the room to the maximum extent.

In the accompanying drawing:

Figure 1 is a fragmentaryperspective view of the flue or chimney of an incinerator equipped with a feed hopper constructed in accordance with my invention.

Figure 2 is avertical longitudinal section of the same with the flue or chimney omitted.

Figure 3 is a verticaltransverse section taken on line 3-3 Fig. 2. 1

Figure 4 is an inside elevation of the feed door and feed chute of the hopper detached from the frame upon which the same are normally mounted.

Figure 5 is a horizontal section, on an enlarged scale, taken on line 5-5 F 4.

In the following description similar char-, acters of reference indicate like parts in the several figures of the drawing: 7 y

The numeral 10 represents the front wall of an upright flue, chimney or well which forms a conduit leading to an incinerator which is usually located in the basementor the cellar of a building and adapted to destroy refuse,'garbage and other waste ma terial which is thrown into the chimney and delivered by the latter to the incinerator.

Within each room on the several floors of the building from which the garbage or refuse is tobe delivered to the incinerator, the front wall of the flue or chimney is provided with a'main' frame 1.1 preferably of rectangular form and made of cast iron, the space 12within'this main frame forming the feed opening of the hopper whereby the refuse is delivered from the room to the incinerator through the medium of the flue or chimney.

On the front side of this main frame 11 is arranged a facing frame 13 extending around the marginal part of the inner end of the opening 12 in the main frame and secured thereto by any suitable means. The front edge 14 of this facing 'frame' is inclined so that its upper end is nearer to the flue than the lower end thereof, as shown in Fig. 2. The passage or feed opening through this facing frame and main frame is normally closed by a feed door or lid 15 which is provided at its opposite vertical edges adj acent to the lower end thereof with horizontal trunnions 16 journaled in suitable bearings 17 on the lower parts of the sidewalls of the facing frame 13.

On its inner side this feed door is provided atits upper edge with a horizontal groove 18 which receives the packing strip 19- of asbestos or similar material, and adjacent to its opposite vertical edges the inner side of this door is provided with upright grooves 20 which receive packing strips 21 of asbestos or the like, which packing strips in the closed position of this door or lid are adapted to engage respectively with the horizontal upper edge and the vertical side edges of the facing frame for the vpurpose of producing a sealed joint between the door and the facing frame and thereby prevent leakage of smoke, gas and odors from the flue into the room and also eliminating any objectionable noise, such as would otherwise be caused by the slamming of one metal part.

against the other.

At its lower edge the feed door or lid is provided with a horizontal closure lip or flange 22 which is adapted to engage the up per side of the lower part of the facing frame adjacent to the outer end thereof in the closed position of the door, as shown in Fig. 2,- and thereby prevent leakage of smoke, gases or odors from the flue into the room along this line. i

Upon the inner side of the feed door or lid is mounted a feed chute, upon which the refuse or material to be destroyed is deposited, while thefeed door is in its open position, which refuse is dumped into the chimney or flue and conducted to the incinerator upon closing the hopper door. This feed chute is preferably constructed of sheet metal and in its preferred form the same comprises front and rear bottom walls 23, 24 which are arranged at an angle relatively to each other, and two side Walls 25 extending along the longitudinal edges of the front and rear bottom walls. The front bottom wall 23 is arranged alongthe inner side of the feed door and parallel therewith while the rear bottom wall projects rearwardly through the corresponding feed openings of the facing frame and mainframe, and the side walls 25 arearranged vertically and adjacent to the inner sides of the upright sidewalls of the facing frame and the main frame. The front bottom wall of the feed chute is secured to the inner side of the feed door but spaced therefrom through an intervening air space 26 by means of integral supporting bosses 27 projecting inwardly from the rear side of the feed door, and screws 28 engaging with threaded openings in these spacing bosses 27 and bearing against the inner side of the front bottom wall through the medium of washers 29.

The feed door is held in its closed position by means of a latch or locking device which preferably includes a rotary pin or wrist 30 journaled in-a bearing in the upper part of the door or lid and provided at its inner end with a turn button or cam 31 adapted to engage with a shoulder 32 formed on the inner side of the upper part of the facing frame, while the outer end of this pin is provided with a handle 33 for turning the cam or turn button into and out of its operative position.

Heretofore the feed door in some instances has been made of cast iron which was unduly heavy and therefore not only produced a slamming noise when swinging the same open or shut, but also putting an unnecessary strain on the pivotal connections between the feed door and the facing frame, which connections were liable to be broken when throwing the feed door open. In order to reduce the Weight ofthe feed door-and thus avoid the objections above mentioned this door was in some instances made of aluminum or similar light metal, but this was also found objectionable inasmuch as the bearings formed in this metal for the wrist or pivot 30 of the locking latch would soon wear out and thereby cause this latch to become loose, noisy and not hold the door properly in its closed position.

To obviate this difiiculty'a separate bearing sleeve 34 is provided in which the wrist or pivot 30 of the latch is journaled,which bearing sleeve is made of hard metal such as cast iron or steel, and therefore provides a pivotal support for the wrist or pivot pin 30 which is veryflstrong and durable and not liable towear rapidly, thereby enabling the door tobe held tight and prevent leakage of smoke, gases and odors indefinitely. This bearing sleeve 34 preferably projects forwardly through an opening 35 in the upper part of the feed door 15 and also rearwardly through an opening 36 in the, upper part of the front hopper bottom 23; and the same is preferably held in place by means which include two arms 37 projecting laterally from opposite sides of the bearing bushing 34 between the hopper door15 and the front bottom wall 23. Each of these arms is provided with an opening 38 which receives a;

retaining lug 8 on the inner side of the feed door, and each arm is firmly held in position against. the inner sideof the feed door and by means of a screw 7-which is secured to Wa l o the ma n frame.

the r spective r taining lug 8. and ears ag inst a wash r 6 o erlapping the adjacent par of th chute, as best' sho'wn in F ig1'5 'A pivo al sup .ortior he locking me hanism for the fee .door is thus provided Which permits not only .of making the door of light material but also prevents the cooperating surfaces ofthe pivot pin and two bearing surfaces of the locking latch from wearing unduly and thus insures holding the feed door tightly in its closed position.

In the absence of; any provision to prerent it, smoke a d gases together with he accompanying vapors and odors would be liable to escape through the upper part of the feed opening in the facing and main frames when the feed door is open. This, however, is prevented in the present construction by a bafiie or damper which is provided with an upright lower wing 39 and inclined upper wing 40 which extends upwardly and"forwardly from the upper edge of the lower wing, This bafile is ar-. ranged in the upper part of the feed opening in the main frame and the same is pivotally mounted on the side walls of the latter so as to be capable of swinging in a vertical longitudinal plane by means of two pivot Pins or trunnions 41,42 projecting laterally from opposite edges of the battle adjacent to the angle or vertex between' the lower and upperwings thereof and into engagement with pivot Qpeningsor bearings 43, Min the'adjacent upper parts of the side To facilitate the mounting, of this battle on hemai f ame, one f the pivots, for instance the pivot 41, is formed permanently on the baffle by casting or otherwise and the other pivot pin 42 is detachably secured theretoin any suitable manner e. g. by en:-

gaging this pin with two pairs of centering lugs 4:5. 011 the front sideof the baffle and holding this pivot pin 42 in. engagement i; wi h these ce tering lugs by mean o a s r w 4:6, s shown in Fig.

In moun ing this bafiie t e fixe pivot Or trunnion '41 is'first passed through the bear; ing opening 4L3 from the inner side of the frame 11, then the other pivot pin 42 is also inserted in its respective bearing opening 44 and secured by means of the Screw-462m the adjacent edgeof the bafiie, therebyconnecb ing the baflie with the frame in such manner that in subsequently usinggthe. hopper this haifie cannot become deta hed from its mounto mal y the'lower wing of t e bafiie hangs in a vertical pendent position and into the spacebetween the upper parts .of the side walls 2.5 of the feed opp r, for wh ch purpose the opposite vertical edges of the lower wing 3Qarespaced apart from the side walls of the main frame by intervening gaps 4 8 which receive the upper edge portions of the side walls 25, as shown in Fig. 3. The upper wing 40 of the baflle, however, extends sub.- stantially the full width of thefeed opening in the mainframe and normally engages its upper edge with the underside ofv the top wall of the main frame 11, as best shown in Fig. 2, thereby preventingthe bafiie from swinging outwardly beyond its normal position which it reaches when the lower wing thereof is in a vertical position. The forward or opening movement of the feed door and the feed chute is limited by engagement. of

the rear bottom wall 24 of the chute with the lower edge of the lower wing 39 of the baffle, as shown by dotted lines in Fig. 2, thereby also closing the lower part of the feed opening and preventing the escape of smoke, gases and odors from the chimney or flue into the room at the same time these are prevented from escaping through the upper bl part of this opening into the room by the While the feed door andchute are inthis open position the refuse, garbage or the like is deposited upon thetrough-shaped upper side of the chute and then the attendant swings the feed door upwardly and forward- 'ly into its closed position, whereby the lower thereby permit unobstructed flow of the material into the chimney or flue. After such material has passed beyond the battle the latter again swings back into its normal position due to the fact that the lower wing of the baflie is somewhat longer and heavier than the upper wing, whichpreponderating weight of the lower wingcausesthe baffle to normally occupy a position in which the lower wing is arranged vertically Y and the upper wing thereof is inclined and engages with the top of the main frame.

All these partsare 7 strong anddurable and not only capable of being produced at comparatively low cost but they are also not likely to get. outof order so that the feed hopper requires practically no attention for maintaining the same in operativecondition.

I claim as my invention: I

1. A feed hopper for incinerator flues comprising a frame mounted on said flue and having a feed opening, a door pivoted at one end on said frame and adapted to engage the frame for closingthe feed opening therein, a bearing sleeve of hard-er metalthan said door arrangedon the inner side of said. door and end of said pin adapted to engage the inner side-of said frame, and a handle arranged on the outer end of said pin;

2. A feed hopper for incinerator flues comprising a frame adapted to be mounted on the flueand having a feed opening, a feed door pivoted at its lower end on said frame to swing vertically for covering and uncover ing said feed opening and provided at its upper end with a front bushing opening and on opposite sides of said bushing opening with inwardly projecting bosses, a feed chute arranged within said feed opening and hav ing a wall secured to said bosses and'also having a rear bushing opening arranged in line with said front bushing opening, a bearing bushing of harder metal than said door having its front and rear ends arranged within said front and rear bushing openings and provided on its opposite sides with perforated arms arranged between said door and chute wall and receiving two of said bosses, screws for securing said chute wall to some of said bosses and over said arms, a pivot pin journaled in said bushing, a turn button arranged on the inner end of said pivot pin and adapted to engage-the inner side of said frame, and a handle arranged on the outer end of said pivot 3. A feed hopper for incinerator flues com prising a frame adapted to be mounted on the flue and having a feed opening, a door pivoted on the frontside of said frame to cover and uncover said feed opening, and a baffle arranged in the upper part of said feed opening and pivoted on the frame and having a lowerwing projecting downwardly. from its axis and an upper wing projecting upwardly from its axis and adapted to engage the top of said frame to limit the outward movement of said lower wing.

4.: A feed hopper for incinerator flues comprising a frameadapted to be mounted on the flue and having a feedopening, a door pivoted on the front side of said frame to cover anduncover said feed opening, and a bafl'le arranged in theupper part of said feed opening and pivoted on the frame and having a lower wing projecting downwardly from its axis and an upper wing project-ing upwardly from its axis and adapted to engage the top of said frame to limit the outward movement of said lower wing, said lower wing being normally arranged in avertical position and said upper wing being normally and upwardly 1narranged in a forwardly clined position.

5. Afeed hopper'for'incineratorflues, comprising aframe adapted to be mounted on the flue and having a feed opening, a doorpiv oted on the front side of said frame to cover and uncover said feed opening, a baflie arranged in the upper part of said feed opening prising a frame adaptedto'be mounted on the flue and having a'fee'd opening, a door pivotedjon'the front side ofsaid frame to cover and uncover said feed opening, a bafile arranged in theupper part of said feed open ing and pivoted on the frame and having a lower wing. projecting downwardly from its axis and an upper wing projecting upwardly fromits. axis and adapted to engage the top of said frame to limit the outwardmovement of said. lower wing, said lower wing having its opposite vertical edges spaced from the adjacent side walls of said frame, and a feed chute having a front bottom wall secured to saiddoor, a rear bottom wall adapted toengage the lower end of said lower wing to limit the opening movement of the door and close the lower'part of said feed opening, and two side walls arranged in the spaces between said frame side walls and the opposite vertical edges of said lower wing.

7. vA feed hopper for incinerator fiues comprising'a frame adapted to be mounted on the flue and having a feed opening, adoor pive oted on the front side'of said frame to cover and uncover said feed opening, a bafliearranged in'the upper part of said feed opening and pivoted on the frame and having a lower wing projecting downwardly from its axis and an upper wing projecting upwardly inc fromits'axis and adapted to engage the top of said fran'i'e to limit the outward movement of said lower wing,'and a chute secured tosaid door and adapted to engage the lower edge of said baflie in the open position of the door. .8. A feed hopper for incinerator flues com prising-aframe adapted to bemounted on the flue and having a feed opening, a door piv oted on the front side of said frame to'cover and uncover said feedopening, a baflie arranged in the upper part of said feed opening; and means for pivotally supporting said bafiie including afixed pivot pin arranged on one end of. said battle and engaging a pivot opening in one side of said frame, and a detachable pivot pin removably mounted on the opposite end of said baffle and engaging a pivot opening in the opposite "side of said frame. Q 1 i In testimony whereof I hereby aflix my sig lture'.- i i EDWARD BREITWIESER

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